Cop skewer for loom shuttles



June l0, 1930 ATTORNY Flammen. noUGLAs, or HornnALn, iviAss ed in eachshuttlebox,

pas

' haveV been Patented June 10i, H193i) Unirse s'lgrns i PATENT OFFICE j j RATION, 0F HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE Y con SKEWEB Fon Looivr sHU'r'rLEs Application md May. 14,

`This invention relates fto threadcarrier f.

sup ticularly directed to cop skewers for holding ports for loom shuttlesand is more parwound' cops `in the shuttle during weaving.

` It is now the ordinary practice to form cops of fillingV by winding a portion of the yarn or thread upon'a short paper cop tube,

j 'leaving the major portion of -thevcop interior unsupported, f

and consequently liable on slight disturbance of itsinner windings or coils to have the yarn or thread suiiiciently disturbed to interfere materially with proper weaving conditions. During weaving the shuttle is suddenly impelled from one side of the loom tothe otherand suddenly arrestwith the result that the wound'copis subjected tosudden disturbed positionon the cop skewer.

It has been the practice heretofore,

single spindle or split type, with barrel proj ectingportions formed in some instancespby a spiral ,or rib extending about and longitudinally along the cop skewer.

Vefficient in the' discharge of their functions, but have introduced-a disturbing influence upon the interior' windings of the unsupported portion of the cop, because when the cop 1s pushed longitudinally onto the spiral portion of the skewer it is subjected to alateral'bending influence, first in one direction andthen in another, as the cop and skewer-are brought into their properV positions. Thisbending and disturbing influence on the interior windings of the unsupported portion ofthe cop is due to single spiral as heretofore employed'has its projecting portions at any point longitudinallyuof the skewer cavity ofthe spiral on opposite portions of the skewer. VAls well known'by those familiar with the characterof wound cops, and bending action [or disturbance of the interior windings -by extent, is liable to result in interior windings, with the result that the yarn or thread will not be vdelivered properly-from the. cop duringweaving and may therefore, to provide cop skewers, whether ofthe Y Such spirals invention, the fact that the disposed opposite the con- Y bending the cop, even to slightV sloughing ofthe l 1928. Serial No. 277,452.

into the shed.

One of theV purposes of the present invenv tion 1s to provide a cop skewerv with a pluarranged side-by-side longi-.-

rality of spirals tudinally of the skewer., so that when awound cop-is `forced longitudinally of the skewer into its supported position thereon, the cop itself will not be laterally bent and the interior windings will not be disturbed. is due to the fact that during the relative longitudinal movement of the improved skewer and cop in their assembly, the projecting portions ofthe plural spirals will act conjointly and at the sameV time upon the same section of the interior windings of the cop, thereby preserving its longitudinal axis and interior windings undisturbe .p Y

VAnother feature of the invention consists in providing a cylindrical portion for-the support of the'paper cop tube, so that during the action ofthe feeler in a feeder loom,`the

feeler willbe engaged by a cylindrical surface on the exterior of the paper tube, and in order to preserve the' undisturbed relation, of the interior paper portion of the cop skewer, such portion of the skewer may be provided with a spiral rib which-extendsV only slightly beyond the cylindrical surface of the skewer.

The invention and-novel features thereof will best be made clear from the followingv description and the accompanying drawings vof one good form thereof, itbeing understood that 'while a solid spindle cop skewer is shown -Y Vand described in connection with the present other types of cop' skewers may be provided with the plural spirals arranged side-by-side longitudinally of the skewer. In the drawings:- -V

' Fig. 1 is a plan viewjof portions of a filling replenishing shuttle showing the cop skewer lof the present invention therein and also indicating by section the yarn windings and the paper cop tube;

Y Fig. .2 is a section on the line 3-3 of Fig.

This f AoHUsnr'rs, Assis-Non To Daarna conio-` becomebroken or carrybunches of the yarn* lshowing only the cop skewer and windings v thereon; and

Fig. Sis a similar view on the line 4-4 of Fig. l. Y Y

75 i tube and the cylindrical f `posed opposite to each v`windings, jccted to any bending orfdistortional strains calculated tions l2 and Vtween the raised portions l2 and `two spirals as substantially out of engage- .'cop. The illustration afforded The cop skewer in the present instance of the invention is shown in association with a lling replenishing shuttle having a body portion l containing the usual filling chamber 2 and provided with holding jaws 3 which are adapted to engage rings 4 provided on the headA 5 of the cop skewer, the construction being such that the cop skewer may be readily detached and ejected from the shuttle on rcplenishment of filling, as usual. rllhel'front wall of the shuttle is provided with an opening 6 through which the feeler may extend and feel for the filling in the shuttle on detecting beats.

As more clearly indicated in Fig. l, the cop skewer is provided with a barrel portion 7 eX- tending from the head 5 of the skewer and suchbarrel portion is provided with a plural- Of stance, arranged side-by-side and extending ,longitudinally of the skewer.

spirals, two, 8 and 9, in the present in- The spirals 8 and 9 are of the same pitch,

Ewith the resultA that the projecting yportion of eachgspirah as indicatedinFigs. 2 and 3, is {disposed opposite the projecting portion of the companion spiral, Vand similarly the depressions lO and ll of each spiral are disother, the result being that when the cop skewer and cop are forced relatively in a longitudinal direction, the projecting or shouldered portions of the spirals at each side of the cop will act at-the same time upon opposite portions ofthe interior so that the cop itself is not subto injure the cop or its interior windings.

As indicated in Fig. 2, the interior of the cop, indicated by the windings a, is engaged at opposite points of the slrewer by the raised portions l2 and 13 of the two companion spirals. In Fig. 3 the interior windings of the cop a are shown as engaged by the raised por- 13 of the two spirals at right angles to the position shown in Fig. 2, the two serving to illustrate the condition that occurs :Whenthe cop skewer and the copy are forcibly fengaged by relative longitudinal movements and 3, the shown be- 13 of the thereof. In these same Figures 2 interior windings of the cop a are ment with the depressed portions of the spirals, as at 14 and l5, and similarly in Fig. 3, at right angles to the position shown in 2, the depressed or recessed portions of the two spirals are shown as substantially out of engagement with the interior windings of the by Figs. 2 and 3 is somewhat exaggerated, for the purpose of making the characteristic operation .clear when the slrewer and cop are assembled.

In the construction shown as an instance of the invention, the two spirals 8 and 9 of same pitch extend along the barrel portion of the skewer for a part of its length, and between the terminal portions of the two spirals and the head 5 of the cop skewer, the barrel of the skewer is formed cylindrical, as shown at 16, Fig. l, for the support in cylindrical form of the paper cop tube 17, thefresult being that the paper cop tube wilhbe maintained in its cylindrical shape for proper cooperation with the feeler of a feeler loom. This is an impor'- tant feature, because by the cylin'dricalfshape of the paper cop tubeagainst-which the feeler may contact when the filling is substantially exhausted on a detecting beat, the feeler Will be caused to act more sensitively in the detection of substantial exhaustion of filling, which may thus berun-fromfthe yshuttle with the production ofajminimumwaste. Oililling.

It may sometimes be v desirable to provide the cylindrical barrel portion 16 of theskewer with a small-spiral rib l18 which may.- act ef-g,

`tube andfcop having-a head f'forsecuring the skewer 'in a shuttle, rel portionprovided yand a cop holdingbarwith1 .aplurality Iofsepa- 4ratespirals. arranged-side by side longitudinally iof-the skewer- Io that the exposedfin- Aterior windings of the-wound` copshall notbe displaced as the 4wound cop s forcedllongitudinally upon theV copv skewer.

` 2. Acop skewerfor loom shuttlesforendwise reception of apreviously woundgpaper con tube and `cop..ha\ 1in,fg;, ahead for detachable engagementwith the shuttle,.anda. cop

holding barrel portion provi ded -withfa plurality of separate vspirals of `the .same pitch arranged side b v i side longitudinally of tthe skewer -so` that the exposed-interior windings of the wound cop shall not be displacedgas the wound co pis forced endwise ontothe, lcop skewer.

3. A metallic cop skewer spindleprovided with a head for detachable engagement=-with a shuttle and having afcojholding barrel provided with two separate spirals I arranged side b v sidelongitudinally ofnthefskewerso that the exposed interior windings vof the previously wound cop shallnot be: displaced as the wound cop is forced ylongitudinally upon the cop skewer. l

4. A cop skewer formedas a metallic spindle and `having a cop holding "barrel sprovid ed with twok separate spiralsfarranged side by side longitudinally of the skewer soithat the exposed interior winding offa wound paper cop tube and copvshall-not be displaced as the woundcop is ,forced longitudinally upon the skewer,

and a cylindrical )paper tube holding portion for presenting afcylindrical exterior of the paper tube to the eeler of the loom. f

5. A cop skevver constituted as a metallic spindle and having a cylindrical portion provided With a rib to hold a paper cop tube, and a copholding barrel portion provided with a plurality of cop retaining spirals arranged side by side longitudinally ofthe skewer so Y that the exposed interior windings of the Wound cop shall not be displaced as the Wound cop is forced longitudinally upon the cop skewer.

In testimony whereof, I have signed my name to this specification. FREDRIC E. DOUGLAS. 

